US Bridges

US77 over Lake Wanahoo Spillway

Fair

Saunders County, Nebraska · 1N Wahoo · Structure no. C007803035

Built
2010
15 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete
Length
38 ft
3 main spans
Daily traffic
8,640
2018 count
Owner
State
State Highway Agency

About this bridge

US77 over Lake Wanahoo Spillway is a concrete culvert carrying US77 over Lake Wanahoo Spillway in Saunders County, Nebraska. It was built in 2010, so it is 15 years old, younger than the Nebraska average of 47.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 8,640 vehicles a day, roughly 11% of them trucks, projected to reach 13,824 by 2038. The structure is 38 ft (11.6 m) long. If it were closed, the detour would be 37.3 mi (60 km).

Location

Open in Google Maps
CarriesUS77
CrossesLake Wanahoo Spillway
Location1N Wahoo
RouteU.S. Route 77
CountySaunders County
StateNebraska
Coordinates41.235, -96.6117
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection9 ExcellentNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.3 US tons
Inventory rating36.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length38 ft (11.6 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,640 (2018)
Projected traffic13,824 by 2038
Trucks11%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed37.3 mi (60 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US77 over Lake Wanahoo Spillway built?

It was built in 2010, making it 15 years old in 2025.

What condition is US77 over Lake Wanahoo Spillway in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.

How much traffic does US77 over Lake Wanahoo Spillway carry?

About 8,640 vehicles per day (2018 count), of which roughly 11% are trucks.

How long is US77 over Lake Wanahoo Spillway?

The structure is 38 ft (11.6 m) long with a longest span of 12 ft (3.7 m).

Who owns US77 over Lake Wanahoo Spillway?

It is owned by the State Highway Agency.